The number 7 is considered very fortunate and they are numbers that are common in various casino games. Red 7 is the highest payout, and if the maximum number of three falls on a single payline for the maximum bet, a maximum of 400 times the bet is paid.
Green 7s will pay 150 times the bet for the same combination, while the blue 7s, the least valuable, will reward the player for 75 consecutive bets. Depending on the color combination you landed, the 2 types will also be paid 10 to 200 times. A mixture of all 3 colors is also paid and will pay the player 15 times the bet. This may sound like you can't lose any combination, but it's important, but remember that the game will often fall between symbols, and these symbols won't activate any bonuses at all.